feat: 同步角色选角与首帧身份约束

src/features/subject-identity/components/IdentityGallery.vue

@@ -7,7 +7,13 @@ import { canBeAnchor, currentAnchor, identityViewLabels, readImageProvenance } f
 import type { IdentityImage } from '../types'
 
 /** 身份图库区分权威母版、primary 候选和辅助视图，保留后端原始状态。 */
-const props = defineProps<{ images: IdentityImage[]; subjectName: string; disabled: boolean }>()
+const props = defineProps<{
+    images: IdentityImage[]
+    subjectName: string
+    module: string
+    identityLocked: boolean
+    disabled: boolean
+}>()
 const emit = defineEmits<{ anchor: [imageId: string] }>()
 const selectedId = ref('')
 const confirming = ref(false)
@@ -15,8 +21,13 @@ const anchor = computed(() => currentAnchor(props.images))
 const selected = computed(
     () => props.images.find(image => image.id === selectedId.value) ?? anchor.value ?? props.images[0]
 )
+const character = computed(() => props.module === 'character')
 const canSelect = computed(
-    () => !props.disabled && !!selected.value && canBeAnchor(selected.value) && !selected.value.isAnchor
+    () =>
+        !props.disabled &&
+        !!selected.value &&
+        canBeAnchor(selected.value) &&
+        (!selected.value.isAnchor || (character.value && !props.identityLocked))
 )
 const imageUrl = computed(() => referenceImageUrl(selected.value?.imageUrl ?? ''))
 watch(
@@ -76,12 +87,12 @@ function chooseAnchor() {
             <p v-if="selected.error" class="alert alert-error mt-3" role="alert">{{ selected.error }}</p>
             <div class="mt-3 flex flex-wrap items-center gap-3">
                 <button
-                    v-if="!selected.isAnchor"
+                    v-if="!selected.isAnchor || (character && !identityLocked)"
                     class="button button-secondary"
                     :disabled="!canSelect"
                     @click="confirming = true"
                 >
-                    设为身份母版</button
+                    {{ character ? '确认选角并锁定' : '设为身份母版' }}</button
                 ><span class="text-[11px] text-muted"
                     >{{ selected.provider }} · {{ selected.model }} · {{ formatDate(selected.createdAt) }}</span
                 >
@@ -91,12 +102,15 @@ function chooseAnchor() {
             </p>
             <div v-if="confirming" class="alert mt-3">
                 <p class="text-xs">
-                    确认切换身份母版？旧 primary
-                    母版将停用并保留。后续人物／场景形态生图会引用新母版，道具暂不自动引用。此操作不调用模型。
+                    {{
+                        character
+                            ? '确认选择这张图片作为正式演员？后端会在同一事务中切换身份母版并锁定 Identity，完成后首帧才具备稳定人物身份。'
+                            : '确认切换身份母版？旧 primary 母版将停用并保留。后续场景形态生图会引用新母版。此操作不调用模型。'
+                    }}
                 </p>
                 <div class="mt-3 flex gap-3">
                     <button class="button button-primary" :disabled="!canSelect" @click="chooseAnchor">
-                        确认切换身份母版</button
+                        {{ character ? '确认演员选择' : '确认切换身份母版' }}</button
                     ><button class="text-button" @click="confirming = false">取消</button>
                 </div>
             </div>